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5 Operating Instructions
Thank you for purchasing your Metrel MD1050 two-pole voltage tester with LED screen
The device can be used to detect DC and AC voltages between 6V and 1000V for
polarity, phase sequence and throughput testing up to 500kΏ, and for FI/RCD tests.
The Metrel MD1050 carries a high protection rating (IP65), making it suitable for use in
harsh conditions.
Safety instructions:
You have selected a device that is designed to offer you a high degree of safety. It
conforms to standards DIN VDE 0682-401 and IEC/EN 61243-3. In order to ensure that
the unit is operated correctly and safely, read these operating instructions thoroughly
BEFORE operating the device.
The following safety precautions should be observed:
Check the voltage tester for correct measuring lead, housing and functioning
immediately before each use (as per VDE specification 0105, part 1) by connecting it
to a known voltage source (e.g. a 230V power socket)
Make sure that the test leads and the instrument are in proper working order. If the
indicator shows that one or more functions are not working correctly, do not use the
device any further, but have it examined by a qualified service technician.
Always hold the device by its handles. Avoid touching the probe tips.
Note that all testing for no voltage should be carried out at two poles.
The instrument may not be operated in humid environments!
Do not use when compartment is open! The test leads should be removed from the
measurement circuit while changing the batteries.
Trouble-free operation is guaranteed at temperatures of between -10°C and +55°C.
Keep the device clean and dry at all times. The casing may be cleaned by wiping
with a damp cloth.
The additional warning symbols and acoustic signals issued when voltages are
greater than 35 V are only intended to warn of the danger of life-threatening voltage.
They should not be used for measurement purposes.
Check to make sure that the warning tone can be heard amidst the local ambient
noises.
General points:
Voltages have priority. If no voltage is detected at the probe tips (< 3.0V), the device is
in continuous testing mode. To switch the led torch please press button "light".
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MD 1050-LED